Just to give you some perspective on the relative unimportance of CS% as compared to pitch framing ability, the difference between the best pitch framer and the worst pitch framer in MLB in 2013 was 40 runs, or 4 wins. In 2012, it was 54 runs, or 5.4 wins. In 2011, it was 39 runs. In 2010, it was 50 runs. In 2009, it was 52 runs, and in 2008 it was a whopping 84 runs.
The difference between the best and worst in stolen base runs in 2013 was 15 runs. In 2012, it was 18 runs. In 2011, it was 10 runs. In 2010, it was 15 runs. In 2009, it was 15 runs. In 2008, it was 15 runs.
To summarize, on average, a great arm can give his team an additional 1.5 wins over a weak arm, which is not nothing, but a great pitch framer can give his team an additional 5 wins (or more) over a poor pitch framer.